Valve



Patented dan. 36, 1923.

PATENT QFFIQE.

JOHN R. BOWLIER, OF LOS ANGELS, CALIFORNIA.

VALVE.

Application led May 3, 1921. Serial No. 466,421.

To @ZZ `whom t may Concern:

Be it known that JOHN R. BOWLER, a citizen of the United States ofAmerica, residing` at Los Angeles, in the county of Los Angeles andState of California, have invented certain new and useful mprovementsinl Valves, of which the following is a full, clear, and exactdescription.

This invention relates to valves and has for some of its principalobjects to provide a valve which is simple in construction, whichconsists of a small number of parts, is reliable in operation, and maybe employed either as an intake or discharge valve in connection withair, or other fluid, compressors, Diesel engines and other kinds ofmachines and apparatus. ther objects and advantages will appear as theinvention is hereinafter disclosed.

Referring to the drawings which illustrate what I now consider apreferred form of the invention,

Fig. 1 is a sectional elevation of the valve;

Fig. 2 is across-sectional view taken on the line 2-2 of Fig. 1; and

FigB is an inverted plan view of the devicey shown in Fig.1.

It will be seen that the valve comprises a casing provided with inletand outlet ports, and a valve member therein which cooperates with avalve seat. The casing is shown in the form of a cup-shaped element 10having a cylindrical interior 11 and a cap 13 detachably secured to theelement 10 as by means of coacting screw-threads 111. The cut-awayportions 12 provided on the element and cap serve to enable theseelements to be gripped by wrenches or other suitable tools to secure anddetach the cap from the cup-shaped element.

A valve or valve member 15 is mounted within the casing for slidablerelative movement with respect thereto in an axial direction. This valvemember is shown (see Fig. 2) provided with a cylindrical portion 16which slidably engages the interior 11 of the element 10 and preferablyconstitutes the sole guiding means of the valve in its opening andclosing movements. The bottom of the element 10 v(see Fig. 3) is shownprovided with one or more openings 16 which I shall hereinafter refer toas outlet ports, and the cap 13 is shown provided with an opening 17which I shall hereinafter refer to as an inlet port. The cap 13 isprovided with a valve seat 18 adapted to be engaged by thefrustro-conical portion 19 of the valve 15 to control communicationbetween the inlet and outlet ports 17 and 16. It will be noted 'thatwhen the valve is closed or seated, as shown in Fig. 1, no fluid canpass from the inlet to the outlet ports Vthrough the valve casing. Whenthe valve moves away from the seat 18, in other words when the valveopens, fluid may pass from the inlet port 17, through the passages orperipheral slots 2O provided in the valvemember 15, and thence throughthe outlet ports 17. The operation of the valve may be controlled invarious ways, simple and preferred means being illustrated inthedrawings and described as follows. The valve member 15 is providedwith a downwardly extending boss 21 which is engaged by the upper turnof a compression spring 22. The other end of said spring abuts againstthe end wall of the element 10. It will therefore be seen that the valve15 is biased to seated or closed position. So long as the total fluidpressure on the upper part of the valve 15 (i. e. at 17 fails to exceedthe total fluid pressure on the lower part of the valve (i. e. at 11 or16) by an amount sufficient to overcome the upwardly exerted force ofthe spring 22, the valve will remain closed. However when the firstnamed Huid pressure is sufficiently high to overcome both the opposingfluid pressure and the force of the spring, the valve member 15 willmove awa from the seat 18 and fiuid will pass through the valve in thefollowing path: through the inlet port 17, past the valve seat, throughpassages or slots 20 into chamber 11 and thence outwardly through theoutlet ports 16.

The boss 21 is preferably provided with a slot 25 adapted to receive ascrew-driver or flat bit whereby the valve member 15 may be rotated oroscillated with respect to the cap 13 for the purpose of grinding thevalve, i. e. to cause the valve portion 19 to fit the valve seat. 0

The character and strength of the spring 22 determine the difference influid pressure (on opposite sides of the valve) at which the valve willopen. It will therefore be clear that by choosing a suitable spring thispoint of opening may be selectively con* trolled within reasonablelimits. rlhe imtial tension of the spring may be selectively controlledby the choice of a gasket or Washer 30, or brass Ior other suitablemates out by other means.

rial. hxwi a thickness correspondl t9 the tension desired. By employing.a ati-ely thick washer or gasket the initial force of the spring 22will be less than when a relatively thin gasket is employed.

As hereinbefore set forth my valve is adapted to various uses. It may beemployed either as an intakefor discharge valve thus minimizingr thenumber of stock and sparefparts whiehmust be .kapt on hand. If used inconnection'withair, or ,other fluid7 compressers, wouldbeheld in placeby a suitable cage "(not shown). The specific valve illnstnated.and-particularly the easing thereof. is designed te'be .appliedte'ithesecond stage of air compressor, ron a Winton Diesel engine No. w24 `IV.and, infactual service in :this connection, Yhas been found to be most-eective and'rel-iable in operation.

In vaccordance with'the provislons of the patent statutes, I havehereis'n described-.the principle of operation of myzinvention, togetherwith the apparatus WhichInoW oonsider to -represent the yrbest'embodiments thereof, but I desire to have it understood that theapparatus disclosed isfonly illustrative and -that the invention-'canrbeealrried Also 'while it is clesigned 'to use the various lfeatures`undelements 'in the combinations fand relations clescribed, 'some iolthese rmay vbe `altered and other'somitted withinthe seopeof the*folylowingasleims, and theinvention extends `to such lune.

Y1. A valveor'highpressureair compres sors comprising in combination, a*two-part c ng, gne of Said arts hav' an inlet port aii t'he otherpartiliaving amutet port, one of said parts being provided With afrustreconical valve seat and the other with a cylindrical bore, lavalve member having a. solid Substantially cylindrical portion adaptedslidably to engage the inner cylindrical wall of the last named part ofsaid casing, said valve member having a frustro-conical end adapted toengage said valve-seat, the diameter 4of the base of the frustruan beingsubstantiallythe same as that of said cylindrical lportion of the valve,said valve member having a plurality yof peripheral slots parallel tothe `alrrisof said member #and through which fluid isadapted rto passfrom one of said ports to the other in .substantially straightpaths,-and a compression spring in engagement with 'the end of saidvalve member opposite the fnustroconical end yand in engagement with oneof said parts of the casing /for biasing said valve toward closedposition. Y

2. A v-alveas set forth in-elaiml in which the springconsists'of a helixwhich is offspiral configuration `when compressed into a plane, andwhich has its smaller end adjacent the valve member.

3. A valveas set forth in claim lfin which the 'exteriors yof tl;1e.tvvoparts of the casing are similar whereby the valve may be interchangeablyAemployed as a suction .or a discharge valve.

In testimony whereof lihereto `aiiir my signature.

